/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.testsEx.config;

import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Indicates the cluster configuration to use for a test. If omitted, the
 * cluster configuration is the same as the category. Use this annotation
 * on a category class to indicate that category shares configuration with
 * another category. Example:<pre>{@code
 * @Cluster(BatchIndex.class)
 * public class InputFormat
 * {
 * }</pre>
 * Note that a category uses a single cluster configuration. It is not
 * possible to have <i>tests</i> choose the cluster type because Maven must
 * start the cluster before running tests, thus clusters are a category-level
 * concept, not a test-level concept.
 */
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Target(ElementType.TYPE)
public @interface Cluster
{
  Class<?> value();
}
